| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
|
| Presentation Title |
Finite Element Simulation Based on Constitutive Model of Cellular-structured Metals Produced by Additive Manufacturing |
| Author(s) |
Hyoung Seop Kim |
| On-Site Speaker (Planned) |
Hyoung Seop Kim |
| Abstract Scope |
In this study, a constitutive description of metal additive manufacturing (MAM) materials was developed to accurately simulate their mechanical response to loading. The modeling frame was given by the dislocation density evolution, with two distinctly different dislocation densities being considered: those in cell walls and cell interiors considered as two separate ‘phases’ of the material. By employing the constitutive model developed, numerical analyses were conducted for a broad range of MAM materials - from elemental metals to alloys. A comparison of the numerical simulations with experimental data for Cu and Cu-Sn from literature demonstrated that the model provides an adequate description of its uniaxial tensile properties and the dislocation density variation. In particular, the influence of the dimensions of the cellular structure and the applied strain rate is accounted for faithfully. |